Ren M Iossi

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

5301 Issued in WI

Practice address

2801 W Kinnickinnic River Pkwy Ste 540
Milwaukee, WI 53215-3669

Phone

(414) 385-2601

NPI assigned

Jan 30, 2014

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Other identifiers 1

Other names 1

• Ren Walczak Former name

Electronic endpoints 2

Medicare fee-for-service enrollment

Enrolled in WI

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2012

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Aurora Medical Group, Inc.Group PAC ID 6709794258, 3,764 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: riossi29179@direct.myadvocateaurora.org

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Aurora Medical Group, Inc.

  • Certified Registered Nurse Anesthetist
  • Milwaukee, WI
  • NPI 1427271378
  Medicare reassignment Care Compare group NPD
• Aurora Medical Group, Inc.

  • Durable Medical Equipment & Medical Supplies
  • Oshkosh, WI
  • NPI 1326858044
  NPD
• Aurora Medical Group, Inc.

  • Durable Medical Equipment & Medical Supplies
  • Manitowoc, WI
  • NPI 1801941075
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1391040000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773187200000",
    "number": "1154744977",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 735044",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606735044",
            "telephone_number": "800-326-2250"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2801 W KINNICKINNIC RIVER PKWY STE 540",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "532153669",
            "telephone_number": "414-385-2601"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "IOSSI",
        "first_name": "REN",
        "middle_name": "M",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2014-01-30",
        "last_updated": "2026-03-11",
        "certification_date": "2026-03-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "WI",
            "license": "5301",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100036249",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "riossi29179@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "2801 W Kinnickinnic River Pkwy Ste 540",
            "city": "Milwaukee",
            "state": "WI",
            "country_code": "US",
            "postal_code": "532153678",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "2801 W Kinnickinnic River Pkwy Ste 540",
            "city": "Milwaukee",
            "state": "WI",
            "country_code": "US",
            "postal_code": "532153678",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "REN",
            "last_name": "WALCZAK",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Interra Health, Inc.
• Invivo Wellness Restoration, LLC
• Adriana Ioachimescu, MD
• Octavian Cosmin Ioachimescu, M.D.
• Michael Franklin Iossi, MD
• Casey Michelle Ippen, MD
• Jason Ipsarides, DNP, PMHNP
• Haaris Iqbal, DO
• Zafar Iqbal, MD
• Ir Counseling Services LLC

• Nurse Practitioner in Milwaukee, WI
• Providers in Milwaukee, WI by specialty
• Nurse Practitioner in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 11, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.